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Thread: TR3A SU H6 Rebuild Float chamber Cap Nut

  1. #1
    Obi Wan Tinkerman's Avatar
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    TR3A SU H6 Rebuild Float chamber Cap Nut

    I am rebuilding 2 AUC 878 carbs that came off of my 1960 TR3A. The float chamber cap nuts on the old carbs are steel. The new ones that I bought are brass. Make any difference? It make sense to me to use the new brass ones. The car is a 100,000 mile car and the old steel ones are quite worn. Any reason that I should not replace the old steel ones with the new brass ones? They shore are purtier..............
    Silly question I suppose but just thought I would ask.

    Thanks, Tinkerman
    Dick LeClair
    Mid Tennessee
    1960 TR 3A

    If you can't fix it with a hammer, you've got an electrical problem!

    "ILLIGITIMI NON CARBORENDUM"

  2. #2
    Yoda Geo Hahn's Avatar
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    Re: TR3A SU H6 Rebuild Float chamber Cap Nut

    Seems like either will work. Do the replacements take a Whitworth spanner like the original? (a " Whitworth IIRC).

  3. #3

    Re: TR3A SU H6 Rebuild Float chamber Cap Nut

    Use the brass ones. More resistant to fuel.
    *1959 TR3A
    *1951 Chevy Fleetline Deluxe
    *1986 GMC Sierra Classic

  4. #4
    Obi Wan Tinkerman's Avatar
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    Re: TR3A SU H6 Rebuild Float chamber Cap Nut

    Thanks! Makes more sense to me.
    Dick LeClair
    Mid Tennessee
    1960 TR 3A

    If you can't fix it with a hammer, you've got an electrical problem!

    "ILLIGITIMI NON CARBORENDUM"

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